Persistant Piano Roll Multidock Issue

I have one project that has an issue that I'm sure has a simple solution, but my tiny brain can't seem to find a solution. Almost all of my projects contain at least 1 MIDI track. When I open a previously saved project I usually have the track view front and center and the multidock minimized. Now normally the Piano roll sits in the multidock as a tab and I double click on it's tab and can open it full screen, do my editing and then put it away when I'm done. With this project however, every time I open the project. the piano roll opens up as half of the window at the bottom of the screen in the multidock and I have to minimize it or drag it down to get it out of the way. This is the only project that behaves this way and I don't know why or how to fix it. What makes this one project different and how do I fix it?
Thanks in advance for your help.